First weeks are the hardest.
What can you add in your recovery to let it work this time? Have you tried AA ore online meetings before? What have you done so far desided you want to quit?
I know a relapse sucks and that feels like a fallure. But you will keep doing so if you do not put all kind of work and support systems into it.
Have you read this thread for example?What's YOUR plan? Please do, it will be an eyeopener if you haven’t.
You can do it, I believe we all can. But we have to put in lot’s of work. Try many ways before one works and will be a part of your new sober life.
You did 6, so you can do more 
And with a good solid sober plan, who knows how long your sober stretch will be? 